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Syngenta · Thiamethoxam · EPA Reg 100-1690 · Insecticide ✓ Last verified 2026-05-30

Key facts From the EPA

Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 100-1690. View this product's label on the EPA ↗ (EPA copy accepted September 30, 2021)

Active ingredient Thiamethoxam
Manufacturer Syngenta
EPA registration 100-1690
Category Insecticide
Application method Seed Treatment / Concentrate

According to the label From the product label

These application details were read from this product's label by our system to help you in the field. The label is the law — always confirm rates, sites and restrictions against the actual product label before mixing or applying. View the full label →

Golden Harvest Preferred Seed Treatment is an engineered fungicide-insecticide premix designed for seed treatment to protect against early-season damage. It is used on soybean crops to control various listed insects, seed-borne diseases, and seedling diseases. The product contains four active ingredients: Thiamethoxam (insecticide, Group 4A), Mefenoxam (fungicide, Group 4), Fludioxonil (fungicide, Group 12), and Picarbutrazox (fungicide, Group U17). It is applied as a water-based slurry directly to the seed. Technicians should note that this product is highly toxic to aquatic organisms and must be handled to prevent runoff into waterways. It also carries pollinator precautions due to the presence of Thiamethoxam. When handling, use appropriate PPE including long-sleeved shirts, long pants, chemical-resistant gloves (barrier laminate, butyl rubber, nitrile, neoprene, polyvinyl chloride, or Viton), and closed-toe shoes. Always re-circulate the product thoroughly before use and follow specific tank-mix compatibility instructions to prevent settling or incompatibility.

Application rates & sites 1

Target pestIndoor / OutdoorWhere on site RateDilutionInfestation levelNotes
listed insects, seed-borne diseases, and seedling diseases Outdoor soybean seeds Applied as a water-based slurry to seeds.

Mixing & dilution 1

ForWhereAmountPerFinished strengthNotes
Always re-circulate thoroughly before use. Follow manufacturer instructions for seed treatment equipment. Check tank-mix compatibility before use.
PPE required Long-sleeved shirt and long pants; chemical-resistant gloves (barrier laminate, butyl rubber ≥14 mils, nitrile rubber ≥14 mils, neoprene rubber ≥14 mils, polyvinyl chloride (PVC) ≥14 mils, Viton® ≥14 mils); shoes plus socks.

Timing & weather

Use restrictions 3

Documents

Previous versions (1)

Superseded: superseded (label_prev)

Label SDS
Active ingredient Thiamethoxam
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Label text

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Reference only. Always read and follow the most current EPA-approved label on the product container. State and local restrictions may apply that are not reflected in this digitised copy. Verify the EPA registration number and revision date before use.